drm/i915: Panel commands can be sent only when clock is in LP11
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com> Reviewed-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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@ -229,6 +229,23 @@ static void intel_dsi_disable(struct intel_encoder *encoder)
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msleep(2);
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}
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/* Panel commands can be sent when clock is in LP11 */
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I915_WRITE(MIPI_DEVICE_READY(pipe), 0x0);
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temp = I915_READ(MIPI_CTRL(pipe));
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temp &= ~ESCAPE_CLOCK_DIVIDER_MASK;
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I915_WRITE(MIPI_CTRL(pipe), temp |
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intel_dsi->escape_clk_div <<
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ESCAPE_CLOCK_DIVIDER_SHIFT);
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I915_WRITE(MIPI_EOT_DISABLE(pipe), CLOCKSTOP);
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temp = I915_READ(MIPI_DSI_FUNC_PRG(pipe));
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temp &= ~VID_MODE_FORMAT_MASK;
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I915_WRITE(MIPI_DSI_FUNC_PRG(pipe), temp);
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I915_WRITE(MIPI_DEVICE_READY(pipe), 0x1);
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/* if disable packets are sent before sending shutdown packet then in
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* some next enable sequence send turn on packet error is observed */
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if (intel_dsi->dev.dev_ops->disable)
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